Working out wire size for load
Having a bit of a brain fart tonight and can't remember the formula to work out the wire size for the lights I want to install.
The led lights are 27w @ 12v
My brain is telling me that if I divide 27 by 12 it will give me 2.25amps. So I should be fine with 2mm/10amp wire.
Is this correct or have I mucked it up somehow?
How do I work out how much loss I get over distance?
From the fuse box to the switch then to the light will be about 5-6 metres.
Should I get 3mm wire?
Thanks in advance
Neale
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